Verbal conditioning of angina pectoris during exercise testing

Area of Science:

• Cardiology
• Psychosomatic Medicine
• Exercise Physiology

Background:

• Coronary heart disease (CHD) management often involves exercise testing to assess functional capacity and ischemia.
• The Master two-step test is a common exercise protocol used to evaluate patients with suspected or known CHD.
• Patient perception and reporting of symptoms during exercise are crucial for test interpretation.

Observation:

• A patient with advanced coronary heart disease experienced angina pectoris and significant S-T segment depression during a Master two-step test.
• These symptoms consistently appeared at the 44th crossing, irrespective of the actual exercise duration due to a miscount.
• When the exercise count was accurate and less intense, symptoms did not manifest at the same perceived exertion level.

Findings:

• The patient's angina and S-T segment depression were consistently elicited at a specific perceived exertion level (44 crossings), suggesting a potential role for psychological factors.
• The absence of symptoms at a lower, accurately counted exercise level indicates that the physical exertion alone may not have been the sole trigger.
• This suggests that verbal conditioning or the expectation of symptoms at a certain point may have influenced the physiological response.

Implications:

• Explores the potential for verbal conditioning to provoke or exacerbate angina pectoris in individuals with established coronary heart disease.
• Highlights the importance of considering the psychological component in the manifestation of ischemic symptoms during exercise.
• Suggests that patient perception and cognitive factors may play a more significant role in exercise-induced angina than previously understood.